What Financial Institutions Need to Know About Windows 11

The end of Microsoft’s Windows 10 Extended Security Updates program is approaching. Learn how to evaluate your ATM fleet, understand your upgrade options, and reduce cybersecurity and compliance risks before support ends.

Is your ATM fleet running on Windows 11 yet? Microsoft’s Extended Security Updates (ESU) program for Windows 10 will eventually end, increasing cybersecurity risk for financial institutions. If you’re still relying on Windows 10, it’s time to evaluate your ATM fleet’s readiness for Windows 11. While the ESU program provides eligible organizations with additional time, Microsoft positions it as a temporary bridge while organizations complete their migration to Windows 11.

Why Windows 10 Support Still Matters for ATM Fleets 

Microsoft sets a lifecycle for every Windows operating system, which means each version receives security updates, bug fixes, and technical support for a specific period before reaching its end-of-support date. Microsoft periodically retires older operating systems to focus development resources on newer platforms with stronger security features, improved performance, and greater compatibility with modern hardware.

While Microsoft’s standard support for Windows 10 ended on October 14, 2025, organizations enrolled in the Extended Security Updates (ESU) program can continue to receive critical security updates through October 12, 2027. Once the ESU program ends, organizations still running Windows 10 will no longer receive routine security patches, software updates, or technical assistance for the operating system.

However, it’s important to remember that ESU is just a temporary bridge while enrolled banks complete their migration to a supported operating system, not a long-term replacement for upgrading. While ATMs running on Windows 10 won’t suddenly stop functioning, they’ll run on an unsupported platform that becomes more vulnerable to cyberattacks over time.

Banks running Windows 10 ATMs need to plan ahead rather than waiting until extended support expires, since upgrading the ATM fleet requires evaluating hardware, software, certifications, and operational schedules.

Why ATMs Are Affected by the Windows 10 Support Changes

ATMs function as specialized computers, not simply as cash dispensers, relying on operating systems, ATM software, security applications, communications software, and hardware drivers to operate securely and reliably. Since many ATMs run on Windows-based operating systems, Microsoft’s operating system lifecycle directly impacts financial institutions.

Depending on the age and configuration of each ATM in your fleet, some may only need an upgrade to Windows 11, while others may also need hardware upgrades or complete replacements to meet Windows 11 requirements.

Additionally, before deploying Windows 11, ATM software, transaction applications, and third-party solutions often require testing and vendor certification. If your bank manages hundreds or thousands of ATMs, you’ll need to allow time for procuring hardware, testing software, getting vendor certifications, scheduling, and phasing deployment across multiple bank locations.

9 Questions Financial Institutions Should Ask Before Moving to Windows 11

These questions can help financial institutions evaluate the overall readiness of their ATM fleet and identify which machines require upgrades, updates, or replacement to support Windows 11.

  1. Which Windows version is each ATM running? Is that version still supported?

Many banks have ATM fleets that they’ve upgraded over time, so they may not all be on the same operating system. Taking an inventory of your fleet is the best way to determine upgrade priorities, identify unsupported operating systems, and develop a realistic migration timeline. Then, you can prioritize upgrades before security and support gaps occur.

  1. Is your ATM fleet’s hardware capable of Windows 11?

Unfortunately, not all ATM hardware meets Windows 11’s system requirements. Verify processor compatibility, security features, memory, storage, and other hardware specifications to determine whether each ATM can support Windows 11.

  1. Does the ATM software need updating?

Even if an ATM can run Windows 11, the software it uses may also need to be reviewed. Verify that your ATM applications, security software, device drivers, and third-party solutions are compatible with Windows 11 before deployment.

  1. Do required applications need certification?

Check whether your ATM applications, transaction software, and third-party solutions require vendor certification before you can deploy them on Windows 11. Completing this process early can help avoid implementation delays.

  1. Do your ATMs need additional memory or storage?

Some ATMs in your fleet may require hardware enhancements, such as additional RAM or storage capacity, to support Windows 11 and maintain reliable performance after the upgrade.

  1. Can each ATM be upgraded?

Depending on the ATM’s age, model, and configuration, you may just need to perform a software upgrade. Additionally, some Windows 11 licensing options allow eligible financial institutions to continue running Windows 10 temporarily. This can provide additional flexibility as you prepare your ATM fleet for a phased migration.

  1. Do you need to replace any ATMs?

If you have older ATMs that don’t meet hardware requirements or have reached the end of their usable life, replacing them might be the best long-term investment option.

  1. What’s your migration timeline?

Starting earlier gives you the flexibility to complete the transition while minimizing operational disruption. Planning early also provides more time for hardware procurement, software testing, certifications, and phased deployment across multiple locations.

  1. How can you upgrade with minimal customer disruption?

If you plan a phased migration strategy, you can do so in manageable stages while maintaining customers’ access to cash and self-service banking. This careful scheduling can help you minimize downtime, reduce operational disruptions, and avoid unnecessary service interruptions for your customers.

Prepare Your ATM Fleet for Windows 11 With Confidence 

Shields Business Solutions is a leading provider of ATM, ITM, and Teller Cash Recycler (TCR) sales and service, as well as cash-in-transit and cash management solutions for financial institutions and businesses across the Mid-Atlantic region. Founded in 1970 and headquartered in Moorestown, New Jersey, Shields partners with banks and credit unions to keep their ATM fleets secure, reliable, and future-ready.

Whether your institution needs to determine which operating systems are currently in use, evaluate Windows 11 compatibility, identify upgrade opportunities, or build a phased migration plan, Shields provides the expertise to help you make informed decisions while minimizing customer disruption and operational risk.

Interested in planning your ATM fleet transition? Contact the Shields Business Solutions team at 856-727-0227 or mmcgrath@sbsatm.com